- 1 September 2026 · 6 min
When the API places real orders
A trading daemon runs unattended for six hours a day on a real brokerage account. The engineering that matters is not the strategy — it is what happens when something restarts at the wrong moment.
- 30 August 2026 · 5 min
Bounding a billed API with the shape of its cache key
A public endpoint that calls a metered API is an unbounded bill. Sorting two values before they become a primary key turns cost from a function of traffic into a function of distinct questions.
- 28 August 2026 · 7 min
Free tiers are a design constraint, not a discount
What changes when zero infrastructure spend is a hard requirement — including running a consumer product's LLM layer entirely on free open-weight models, and the measurements that made it work.
- 24 August 2026 · 6 min
Read-only by default: how mcp-multi-db enforces it
A walk through the two layers that make an MCP server safe to point at a real database — a SQL-text guard that is allowed to be imperfect, and a connection that cannot write.